Refrigerator shelf support



FIG. 1 is a front view of a refrigerator shelf support according my new ornamental design; and,

FIG. 2 is a front perspective view thereof, with part of the unclaimed left refrigerator side wall being cut away for clarity.

The broken lines of the refrigerator shelf support and refrigeratory, etc., show surrounding structure or environment and do not form part of the claimed design.

The dotted lines represent the boundary between claimed and unclaimed subject matter and do not form a part of the claimed design. 

CLAIM The ornamental design for a refrigerator shelf support, as shown and described. 